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Process for producing biodiesel

a biodiesel and process technology, applied in the direction of fatty oil/fat refining, fatty acid chemical modification, milk preparation, etc., can solve the problem of heavy subsidies and other problems

Inactive Publication Date: 2005-01-20
PETROLEO BRASILEIRO SA (PETROBRAS)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0014] Still, the invention makes possible to produce all the ethyl alcohol required by the transesterification reaction through a process for conventional carbohydrate fermentation of a portion of the reaction residual filter cake.
[0016] Still further, since the filter cake is ricin-free, the present invention makes possible to use the residual filter cake as a constituent of cattle food.
[0018] The present invention further provides an economically viable process for producing biodiesel that dispenses with any government subsidies to its commercialization.
[0019] The present invention provides therefore a sustainable process for producing biodiesel.

Problems solved by technology

That is why, in spite of the huge government interest of several countries on the biodiesel technology and production, still heavy subsidies are required for supplying biodiesel in gas stations.

Method used

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  • Process for producing biodiesel
  • Process for producing biodiesel

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example

[0049] 1000 g of raw castor bean seeds (Ricinus Communis L) of the Brazilian variety known as “Bull Heart”, processed as described above were added to a reactor together with 800 g ethyl alcohol and comminuted under vigorous agitation, at ambient temperature, until the reaction mass was a fluid, homogeneous suspension.

[0050] Then 40 g of sodium alkoxide catalyst were incorporated to the mixture and for 1 hour under moderated agitation and reflux, under atmospheric pressure and constant temperature of 50° C., the transesterification reaction of said seeds was carried out.

[0051] Then, the reactor charge was cooled to 40° C. and filtered, yielding 600 g of solid phase and 1240 g of a filtrate that after being distilled at atmospheric pressure, provided the recovery of 680 g raw ethyl alcohol condensate and 560 g of a liquid residue, remaining in the distiller, made up of a mixture of esters, glycerin and other by-products.

[0052] Once transferred to a decanter where it was kept for t...

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Abstract

An integrated process is described for producing biodiesel from oleaginous seeds, preferably castor bean seeds, comprising a transesterification reaction where the seeds themselves react with anhydrous ethyl alcohol in the presence of an alkaline catalyst. The resulting ethyl esters are then separated by decantation and neutralized and used as fuel for diesel engines, co-solvents for diesel and gasoline mixtures with anhydrous or hydrated ethyl alcohol. The solid fractions may be used as fertilizers, for feeding cattle and as a raw material for producing ethyl alcohol.

Description

FIELD OF THE INVENTION [0001] The present invention relates to an integrated process for producing biodiesel-long chain fatty acid alkyl monoesters from vegetable oils, to be used as fuel or as fuel additives and economically viable by-products, such fatty acids being present in oleaginous seeds. More specifically, the present invention relates to a process for producing biodiesel by transesterification, whereby instead of reacting alcohol and castor bean-extracted oil, it is the castor bean seeds themselves that are made to react with alcohol, in the presence of an alkaline catalyst, to yield a fuel product made up of ethyl monoesters of the fatty acids present in those seeds. Also obtained is glycerin, a starchy product free from ricin useful for the formulation of cattle food and also used as raw material for producing ethyl alcohol or as a fertilizer and finally a mineral-rich product from the castor bean hull that may be used as a fertilizer. BACKGROUND INFORMATION [0002] Produ...

Claims

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Application Information

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IPC IPC(8): A23K1/16A23K1/18A23L11/00A23L25/00C05F5/00C10L1/02C10L1/18C10L1/182C10L1/19C11B3/12C11B3/16C11C3/00
CPCA23K1/1609A23K1/1813C05F5/008C10L1/026C10L1/1802Y02E50/13C10L1/19C11B3/12C11B3/16C11C3/003C10L1/1824A23K20/105A23K50/10Y02A40/20Y02E50/10Y02P20/10
Inventor KHALIL, CARLOS NAGIBLEITE, LUCIA CRISTINA FERREIRA
Owner PETROLEO BRASILEIRO SA (PETROBRAS)
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